Keywords for F321

1.       Atoms and Electron Structure

Isotopes                                    Atoms of an element with different numbers of neutrons and different m***es

Relative atomic m***                  Average m*** of an atom relative to 1/12 of the m*** of a carbon-12 atom

Relative isotopic m***                M*** of a particular isotope relative to 1/12 of the m*** of a carbon-12 atom

Orbital                                      A region that can hold up to 2 electrons with opposite spins

1^st ionisation energy                   Energy change when one mole of electrons is removed from one mole of gaseous atoms

2.       Equations and acids

Acid                                          Proton donor (H⁺ donor)

Base                                         Proton acceptor (H⁺ acceptor)

Salt…